<template>
  <div class="app-container">


    <el-row :gutter="20">
      <!--部门数据-->
      <el-col :span="spanLeft" :xs="24">
        <div class="head-container">
          <el-input v-model="deptName" placeholder="请输入章节名称" clearable size="small" prefix-icon="el-icon-search"
            style="margin-bottom: 20px" />
        </div>
        <div class="head-container">
          <el-tree :data="SubjectdeptOptions" :props="defaultProps" :expand-on-click-node="false"
            :filter-node-method="filterNode" ref="tree" node-key="id" default-expand-all highlight-current
            @node-click="handleNodeClick" />
        </div>
      </el-col>
      <!--用户数据-->
      <el-col :span="spanRight" :xs="24">
        <el-row :gutter="10" class="mb8">
          <el-col :span="1.5">
            <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd"
              v-hasPermi="['system:dept:add']">新增</el-button>
          </el-col>
          <!-- <el-col :span="1.5">
        <el-button type="info" plain icon="el-icon-sort" size="mini" @click="toggleExpandAll">展开/折叠</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar> -->
        </el-row>

        <el-table v-if="refreshTable" v-loading="loading" :data="deptList" row-key="deptId"
          :default-expand-all="isExpandAll" :tree-props="{ children: 'children', hasChildren: 'hasChildren' }" stripe>
          <el-table-column prop="deptName" label="章节名称" width="260"></el-table-column>
          <!-- <el-table-column prop="icon" label="章节图标" width="120" align="center">
          <template slot-scope="scope">
            <img :src="bindPic(scope.row.icon)" class="dept-icon">
          </template>
        </el-table-column>   -->
          <el-table-column prop="describes" label="章节描述" width="480" align="center"></el-table-column>
          <el-table-column prop="status" label="状态" width="100" align="center">
            <template slot-scope="scope">
              <dict-tag :options="dict.type.sys_normal_disable" :value="scope.row.status" />
            </template>
          </el-table-column>
          <el-table-column label="创建时间" align="center" prop="createTime" width="200">
            <template slot-scope="scope">
              <span>{{ parseTime(scope.row.createTime) }}</span>
            </template>
          </el-table-column>
          <el-table-column label="操作" align="center" fixed="right" width="100">
            <template slot-scope="scope">
              <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)"
                v-hasPermi="['system:dept:edit']">修改</el-button>
              <el-button size="mini" type="text" icon="el-icon-plus" @click="handleAdd(scope.row)"
                v-hasPermi="['system:dept:add']">新增</el-button>
              <el-button v-if="scope.row.parentId != 0" size="mini" type="text" icon="el-icon-delete"
                @click="handleDelete(scope.row)" v-hasPermi="['system:dept:remove']">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-col>
    </el-row>



    <!-- 添加或修改章节对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="600px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-row>
          <el-col :span="24" v-if="form.parentId !== 0">
            <el-form-item label="上级章节" prop="parentId">
              <treeselect v-model="form.parentId" :options="deptOptions" :normalizer="normalizer" placeholder="选择上级章节" />
            </el-form-item>
          </el-col>
        </el-row>
        <el-row>
          <el-col :span="12">
            <el-form-item label="章节名称" prop="deptName">
              <el-input v-model="form.deptName" placeholder="请输入章节名称" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="显示排序" prop="orderNum">
              <el-input-number v-model="form.orderNum" controls-position="right" :min="0" />
            </el-form-item>
          </el-col>
        </el-row>
        <el-row>
          <el-col :span="24">
            <el-form-item label="章节描述" prop="describes">
              <el-input v-model="form.describes" placeholder="请输入章节描述" maxlength="20" />
            </el-form-item>
          </el-col>

        </el-row>
        <el-row>

          <el-col :span="12">
            <el-form-item label="章节状态">
              <el-radio-group v-model="form.status">
                <el-radio v-for="dict in dict.type.sys_normal_disable" :key="dict.value" :label="dict.value">{{ dict.label
                }}</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col :span="12">

          </el-col>
        </el-row>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>
  
<script>
import { listDept, getDept, delDept, addDept, updateDept, listDeptExcludeChild } from "@/api/course/chapter";
import Treeselect from "@riophae/vue-treeselect";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";

export default {
  name: "Dept",
  dicts: ['sys_normal_disable'],
  components: { Treeselect },
  props: {
    subId: {
      type: Number
    }
  },
  data() {
    return {
      spanLeft: 4,
      spanRight: 20,
      subjectId: this.subId,
      // 遮罩层
      loading: true,
      // 显示搜索条件
      showSearch: true,
      // 表格树数据
      deptList: [],
      
      SubjectdeptOptions:  [],
      defaultProps: {
        children: "children",
        label: "label"
      },
      // 章节树选项 
      deptName: undefined,
      deptOptions: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 是否展开，默认全部展开
      isExpandAll: true,
      // 重新渲染表格状态
      refreshTable: true,
      // 查询参数
      queryParams: {
        subjectId: undefined,
        deptName: undefined,
        status: undefined
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        parentId: [
          { required: true, message: "上级章节不能为空", trigger: "blur" }
        ],
        deptName: [
          { required: true, message: "章节名称不能为空", trigger: "blur" }
        ],
        orderNum: [
          { required: true, message: "显示排序不能为空", trigger: "blur" }
        ],

      }
    };
  },
  created() {
    console.log("====" + this.subjectId)
    if(this.subjectId!=undefined){
      this.spanLeft = 0 ;
      this.spanRight = 20 ;
    }
    this.queryParams.subjectId = this.subjectId
    this.getList();
  },
  methods: {
    bindPic(url) {
      if (url == null) {
        return require("@/assets/404_images/404.png");
      }
      return process.env.VUE_APP_BASE_API + url;
    },
    /** 查询章节列表 */
    getList() {
      this.loading = true;
      listDept(this.queryParams).then(response => {
        this.deptList = this.handleTree(response.data, "deptId");
        this.loading = false;
      });
    },
    /** 转换章节数据结构 */
    normalizer(node) {
      if (node.children && !node.children.length) {
        delete node.children;
      }
      return {
        id: node.deptId,
        label: node.deptName,
        children: node.children
      };
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        deptId: undefined,
        subjectId: undefined,
        parentId: undefined,
        deptName: undefined,
        describes: undefined,
        status: "0"
      };
      this.form.subjectId = this.subjectId
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    /** 新增按钮操作 */
    handleAdd(row) {
      this.reset();

      if (row != undefined) {
        this.form.parentId = row.deptId;
      }
      this.open = true;
      this.title = "添加章节";
      listDept(this.queryParams).then(response => {
        this.deptOptions = this.handleTree(response.data, "deptId");
      });
    },
    /** 展开/折叠操作 */
    toggleExpandAll() {
      this.refreshTable = false;
      this.isExpandAll = !this.isExpandAll;
      this.$nextTick(() => {
        this.refreshTable = true;
      });
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      getDept(row.deptId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改章节";
        listDeptExcludeChild(row.deptId).then(response => {
          this.deptOptions = this.handleTree(response.data, "deptId");
          if (this.deptOptions.length == 0) {
            const noResultsOptions = { deptId: this.form.parentId, deptName: this.form.parentName, children: [] };
            this.deptOptions.push(noResultsOptions);
          }
        });
      });
    },
    /** 提交按钮 */
    submitForm: function () {
      if (this.form.subjectId == undefined) {
        this.$modal.msgError("科目信息为空，请检查登录是否过期，或者科目是否存在！");
        return
      }
      console.log(this.form)
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.deptId != undefined) {
            updateDept(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addDept(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
      // 筛选节点
      filterNode(value, data) {
      if (!value) return true;
      return data.label.indexOf(value) !== -1;
    },
      // 节点单击事件
      handleNodeClick(data) {
      this.form.courseId = data.id;
      this.queryParams.courseId = data.id;
      this.handleQuery();
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      this.$modal.confirm('是否确认删除名称为"' + row.deptName + '"的数据项？').then(function () {
        return delDept(row.deptId);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => { });
    }
  }
};
</script>
  
<style lang="scss" scoped>
.dept-icon {
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  margin-right: 12px;
}
</style>